gcc/testsuite/gcc.target/aarch64/imm_choice_comparison.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" } */
   3
   4 /* Go from four moves to two.  */
   5
   6 int
   7 foo (long long x)
   8 {
   9   return x <= 0x1999999999999998;
  10 }
  11
  12 int
  13 GT (unsigned int x)
  14 {
  15   return x > 0xfefffffe;
  16 }
  17
  18 int
  19 LE (unsigned int x)
  20 {
  21   return x <= 0xfefffffe;
  22 }
  23
  24 int
  25 GE (long long x)
  26 {
  27   return x >= 0xff000000;
  28 }
  29
  30 int
  31 LT (int x)
  32 {
  33   return x < 0xff000000;
  34 }
  35
  36 /* Optimize the immediate in conditionals.  */
  37
  38 int
  39 check (int x, int y)
  40 {
  41   if (x > y && GT (x))
  42     return 100;
  43
  44   return x;
  45 }
  46
  47 int
  48 tern (int x)
  49 {
  50   return x >= 0xff000000 ? 5 : -3;
  51 }
  52
  53 /* baz produces one movk instruction.  */
  54 /* { dg-final { scan-assembler-times "movk" 1 } } */